Doffing mechanism for spinning-frames and the like



H. C. SPEIGHT.

00mm; MECHANISM FOR SPINNING FRAMES AND THE LIKE.

. APPLICATION FILED APR. H, 1919.

my mm D WA m W m M M W H. 2. SPEIGHT. DOFFING MECHANISM FOR SPINNING FRAMES AND THE LIKE.

APPLICATION FILED APR. H, 1919.

Patented Aug. 24, 1920.

2 SHEETS-SHEET 2.

Fig

. HENRY CHARLES SPEIGHT, 0F BRADFORD, ENGLAND.

IDOFFING- MECHANISM FOR SPINNING-FRAL'IES AND THE LIKE.

Application filed April 11, 1919.

spinning frames and the like, in such wise that full bobbins or the like are expeditiously removed from their spinning posi tion and empty ones moved into place, the arrangement generally comprising a sliding front bar so mounted as to be given a rising and falling motion, the said bar carrying clips or receptacles to engage, receive, hold, and deliver bobbin or like flanges, and these clips may be moved in, to allow one set to embrace, hold or engage the said flanges, and at the desired time be moved sidewise' to deposit the other set carrying empty bobbins or the like in position to be engaged by the spindles and so be held ready for spinning. lVhen the clips are withdrawn toward the front of the frame, one clip of each set will be empty and the other will carry the full bobbin or like. For the next doff the sidewise movement of the clip or like carrying device will be reversed. V

In the case of a ring spinning frame some means are desired to lead the yarn to the back of the tube or like and to thebase there.- of, and to this end the eyes or twizzles are mounted in connection with a bar which may through suitable gear be lowered, and each eye or twizzle or group thereof may be so mounted that they may have a tilting action to clear the sides of'the spool or like as they descend.

I am aware that it has heretofore been proposed to carry means for supporting both full and empty bobbins onor in connection with a sliding rod mounted in front of the frame in such wise that the said means may havea rising and falling motion in addition to a movement toward or away from the spindle, either by being turned through an are or moved laterally. In these cases however some device has been necessary to hold the bases of the bobbins such as a series of Specification of Letters Patent.

Patented Aug. 24:, 1920.

Serial No. 289,419.

points or lingers swung or moved under the bobbins either from behind or in front of the spindles. These arrangements are generally suitable to my purpose, but I wish it to be understood that I make no claim to same. 7

In describing my invention in detail reference is made to the accompanying sheets of drawings, similar letters indicating similar parts in which Figure 1 represents a sectional elevation showing my improvements.

Fig. 2 represents a detail of the moving eye board hereinafter described.

Fig. 3 represents a plan view of a portion of a ring frame with my improvement added thereto.

Fig. e represents a section through a bobbin carrier clip.

.Fig. 5 represents a view of a bobbin or like carrier, and

Fig. 6 represents a view of a bobbin or like carrier as used for cap spinning.

To carry my, improvement into effect, I will describe same with reference to a ring spinning frame to which it is especially adapted, but I wish it to be understood I may apply it to other frames and make the necessary modifications to meet the varying requirements, removing caps and fliers in any suitable or known manner and providing the bobbins, tubes, or spools, with a suitable flange to engage the holding device. It being intended to adapt the full and empty bobbin carriers as equivalent to pegs or the like as hereinafter set forth.

Iilounted in front ofthe frame and capable of a rising and falling motion througl suitabl gearing is a supporting member or members A adapted to carry a sliding bar or rod B which along with the supporting member may also be moved toward and away from the spindles or spindle rail. This sliding bar B carries duplicate carriers, holders, or clip like devices C Fig. at for each spindle, such device being formed by preference in the shape of spring acting forks C, each of these spring forks being adapted to engage the edges of a flange l formed on a tube F adapted to fit over the spindles S toward the whirl; in other words the flanges and tubes form a short hollow spindle and are adapted to car y the spools, tubes or bobbins T, the upstanding portion F in some cases being tapered. One of these devices will be mounted over each whirl or on each spindle and one will be carried in one of the forks or holders C leaving an empty holder opposite each spindle as shown in big. 3.

The twizzles or eyes E l igs. 1, 2 and 3 through which the yarn is passed centrally above the S13l11ll62t1iltlll39$ or like thereon,

are mounted on a barE which by means of suitable mechanism may be lowered and the top, or catches at the side of the machine,

will be provided to cause them to resume their normal acting position when they are brought back to spinning position as hereinafter described. Suitable means will be provided for'lowering the ring or lifter rail R means to this end being common to the frames.

- The eyes E are mounted on a bar E- and are hin ed thereto as at E andto ive them play a spring E connectstwo portions as shown in Figs. 1 and 2. The bar E operates in slides E carried from the usual board D in any convenient manner, and a chain or like connection E leads from the bar E over a pulley E to a suitable shaft or drum thereon E which is turned as desired by a handle or lever E Fig. 1. A cam projection E Figs. 1,2 and 3 engages a cam or pulley such as E attached to the sides of the frame and a weight E is attached to the bar E in any suitable position to cause it to tend to tilt so that when the bar is lowered the weight E causes same to tilt and when reversed the projection E makes contact with the roller or pulley E and the bar and eyes resume their normal position. The bearings of the barE. are/ suitably formed to allow of the turning or tilting movement.

I have not gone into a detailed description of the rising and falling movement and lateral movement of the carriers C but have shown a means in the drawings which is well known. I

The carriers C are attached to the sliding bar in any convenient manner, one .means being illustrated. These carriers comprise forked ends C Fig. 3 each having a lower tray like edge C Figs. 1 and 4E and mounted over these tray like edges are forks C pivoted toward the front edge as at C Fig. 4. and terminating in a spring acting device such as C. The fiange F of the bobbin or like supporting device will pass between the forks C and the edge C and when the forks are pressed up against or toward'the spindle the flange will be securely held.

' notched.

Similarly when a flange and supporting de vice 1s 1n a Gill) and the 'spmdlesenter same, on the withdrawal of the clip the flange and device will remain on the spindle.

In operation the'first step is to lower the ring rails R to their lowest position in the usual manner, before stopping spinning, so that the end is wrapped round the spindle or whirl below the tubes or bobbin, and next to lower the eyes or twizzles E by means of handle E till they are about opposite the rings, the eyes tilting to clear the bobbins or like as they descend. The holders C in front of the machine will be opposite the base or 'fiange'F of the tubes F before mentioned, and an empty holder will be opposite the 'fullspool or like as shown in Fig. 1. The holders C are moved by handle B till the full bobbins are clear of case' the full spool in one holder and nothing in the other. The upwardmovement of the full spool in the holder will break or sever the yarn and leave an end engaging the The eyes or twizzles are returned to theirnormal position and spinning goes on. In setting, the full spool or like is taken from the false spindle F and'anempty tube or like placed thereon and for the next doff the movements are as before with the exception that the sliding bar is moved in the other direction.

It will be seen that dofling may be expeditiously effected and the parts are simple in action, and while, as before mentioned the motion is one which isespecially adapted to ring frames the use of holders or clips along .with the false spindles or pegs substantially as described may with advantage be applied to other machines, coupled with means for guiding the yarn to a suitable positionfor breaking or severing. For example for cap frames, which will have the usual cap holding devices, the tube T Fig. 6 will'be separate from the whirl WV and will have a flange F corresponding to the flange F and means such as engaging lugs TV and T to facilitate driving. The flange F will be embraced similarly to the whirl which may be suitably flange F and the tubes T will be duplicated for each spindle. V

I declare that what'I claim is "1. The combination with a spinning machine having a row of spindles, of dofling mechanism, comprising a pair of holders for each spindle, all of said holders being located in longitudinal alinement and adapted for reciprocatory movement vertically, longitudinally, and transversely with relation to the row of spindles, whereby the holders are always in vertical position.

2. The combination with a spinning machine having a row of spindles, of dotting mechanism, comprising a pair of holders for each spindle, all of said holders being located in longitudinal alinement and adapted for reciprocatory movement vertically, longitudinally, and transversely with relation to the row of spindles whereby the holders are always in vertical position, and independent means for moving said holders in either of said directions.

3. In doiiing mechanism for spinning frames, an eye or like board or carrier capable of a rising and falling motion having means for tilting the eyes or twizzles to clear the bobbin or the like during the downward motion and means for returning the eyes to their normal position during the ascending motion substantially as described.

4. The combination with a spinning machine having a row of spindles, of dofling mechanism, comprising a pair of holders for each spindle, all of said holders being located in longitudinal alinement and adapted for reciprocatory movement vertically, longitudinally, and transversely with relation to the row of spindles, a pivotally mounted thread guide adapted for vertical reciprocatory movement, and means for swinging said guide on its pivot during such movement.

5. In a dofling mechanism for spinning machines having a row of spindles, the com bination of a plurality of tubes each adapted to carry a bobbin, a support for each of said tubes movable in straight lines in three directions relatively to the spindles for removing the bobbins therefrom while retaining the holders in vertical position at all times and cooperating means carried by the tubes and supports for flexibly retaining the tubes on said supports.

In testimony whereof I have signed my name to this specification.

HENRY CHARLES SPEIGHT. lVitness:

LEWE VVAUGH. 

